BOSTON -- Red Sox lefty David Price has been encouraging teammate Mookie Betts to show more emotion after big hits.

Betts flipped his bats, screamed and waved his arms in front of his body here Thursday when he crushed a grand slam that capped off an epic 13-pitch at-bat to put Boston ahead 5-2 in the fourth inning.

"It's the most excited I've seen Mookie on the baseball field. There and his home run in Milwaukee," said Price who earned the win on the mound. "I say it to him all the time, 'I want to see that emotion again from Milwaukee.' So I'm happy it came on my day the way that it did today and it was a good win for us."

Betts pumped his fist as he rounded first base in Milwaukee on May 11, 2017. He bashed a three-run ninth-inning home run vs. the Brewers to lead the Red Sox to a 4-1 victory.

Price said Betts' grand slam is one of the top moments he has seen at Fenway Park since joining the Red Sox in December 2015.

"That wasn't a walkoff or anything of that nature, probably yeah," Price said. "That was a very big moment."

Betts added, "Since I've been the big leagues, it's probably the most excited I've been. Gotta get ready for tomorrow."